Hoisting apparatus.



W. W. MILLER.

HOISTING APPARATUS.

APPLIOATION FILED AUG. 26, 1905.

PATENTED JUNE 26, 1906.

2 SHBBTSSHEBT 1.

PATENTED JUNE 26, 1906.

W. W. MILLER. HOISTING APPARATUS.

APPLIGATION FILED AUG. 26, 1905.

2 SHEETS-SHEET 2.

PATENT OFFICE.

WILSON W. MILLER, OF NEWTON, KANSAS.

HOISTING APPARATUS.

Specification of Letters Patent.

Patented June 26, 1906.

, Application filed August 26,1905. Serial No. 275.942.

To all whom, it may concern:

Be it known that I, WILSON W. MILLER, a citizen of the United States,residing at Newton, in the county of Harvey and State of Kansas, haveinvented a new and useful Hoisting Apparatus, of which. the following isa specification.

This invention relates more particularly to animal-power-operated drumsfor hoisting purposes.

The principal object is to provide novel means of a simple naturewhereby a draftanimal will be able to lift a comparatively great loadand wherein there is no necessity for backing such animal in unwindingthe hoisting-cable after a load has been raised and the apparatus isbeing lowered for another.

Another object is to provide mechanism that is comparatively simple, isnot liable to become deranged, and can be readily transported from placeto place. The structure is thus peculiarly useful for stacking andelevating hay and the like; but its utility is not limited in thisrespect, as it may be employed for a great variety of lifting purposes.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, wherein Figure 1 is a perspective view of themechanism. Fig. 2 is a longitudinal sectional view therethrough. Fig. 3is a cross sec tional view. Fig. 4 is a detail perspective view of oneof the shoe-blocks inverted.

Similar reference-numerals designate corresponding parts in all thefigures of the drawings.

In the embodiment illustrated a baseframe 5 is employed, which ispreferably su ported on wheels 6 and has a tongue 7 detac ablyassociated therewith in order that the aparatus may be readilytransported. The frame includes a platform 8, secured thereto and havinga step-bearing 9, which includes a plate 10, fastened to the platform. Ayoke 1 1 is located over the platform and has a central boxing 12 alinedwith the step-bearing 9, the yoke being supported at its ends bystandard-braces 13, secured to said ends and to the ends of the platform8.

A driving member consists of an upright shaft 14, journaled in thestep-bearing 9 and boxing 12, said shaft having its upper end projectingabove the yoke. sweep 15 is attached to the projecting end and carriesat its outer free end a Whiffletree 16, to which the draft-animal ishitched, while a leading-arm 17 is also carried by the upper end of theshaft.

Keyed or otherwise secured to the shaft just below the boxing 12 is aspider comprising a hub 18, having radial arms 19 terminating at theirouter ends in heads 20, said heads being practically in the .form ofcasings with top, rear, and end walls. Shoes in the form of woodenblocks 21 are carried by the heads 20, said shoes having inclined orbeveled outer faces 22, and, furthermore, carrying depending teeth 23.upon the heads, the adjustment being obtained by means of set-screws 24,threaded through the rear walls of the heads and abutting against therear sides of said shoes. The shoes, moreover, are held in adjustedpositions by clamping-bolts 25, passing through slots 26 in the top ofthe heads and being threaded into the shoes, as clearly illustrated inFig. 2.

Mounted on the shaft beneath the s ider is a drum consisting of a hub 27,loosefy journaled on the shaft and having radiating arms 28, carryingat their outer ends an upright annular wall 29, provided with spacedoutstanding flanges 30, between which a hoistingcable 31 is arranged tobe wound.

The inner face 32 of the annular wall is inclined, as shown in Fig. 2,and constitutes a The shoes are adjustable friction-surface which isarranged to cooper ate with the shoes of the driving member, ashereinafter explained. The annular wall, furthermore, carries aninwardly-extending annular flange 33, provided with upstanding teeth 34,arranged to cooperate with the teeth 23 of the shoes. 2 a

A coiled spring 35 is interposed between the hub 18 and the head 27,tending to separate the members and hold the shoes 21 out of engagementwith the drum. A collar 36 is slidably mounted on the shaft 14 beneaththe hub 27, and pivoted to said collar by bolts 37 is the yoke 38 of alever 39, supported by links 40,- said links being pivoted at theirupper ends to the lever and having their lower ends pivotally mounted onthe plate 10. The rear end of the lever is offset, and to the same isconnected a cable 41, passing about guide-pulleys 42 to anactuatinglever 43, mounted on one end of the frame and arranged to beheld by a dog and rack 44.

In operation the animal hitched to the whiflletree 16 moves at all timesin the same direction, thereby rotating the shaft 14, to-

gether with the spider and shoes. Under normal conditions the drum isdisconnected from the spider, and consequently remains stationary. When,however, a load to be elevated is attached to the hoisting-cable, it isonly necessary to draw upon the actuatinglever 43, whereupon the yoke 38of the lever 39 will be elevated, thus raising the collar 36 and thedrum supported thereupon. This elevation will cause the inner inclinedsurface 32 of the drum to be brought into contact with the outer sidesof the shoes, and the teeth of said drum will in like manner be engagedwith the teeth of the shoes. Thus the driving and driven members will becoupled, the drum will be rotated, and the cable wound thereupon. Whenthe load has been detached and it is desired to drop the mechanismcarrying the same, the draft-animal may be stopped, or it can continueits movement in the same direction. The operator merely releases theactuating-lever 43, thus allowing the drum to drop under the action ofthe spring 35, thereby disconnecting it from the spider and allowing itto freely rotate in a reverse direction to that of the shaft 14. Asalready stated, the apparatus is perhaps particularly useful inconnection with hay-stacking and like machines, but is not by any meanslimited to this use, as it is adaptable for practically any purposewhere temporary hoisting means is desired.

' From the foregoing it is thought that the construction, operation, andmany advantages of the herein-described invention will be apparent tothose skilled in the art without further description, and it will beunderthe combination with relatively rotatable members movable towardand from each other, of a shoe carried by one of the mem- 1 bers andmovable into and out of engagestood that various changes in the size,shape, proportion, and minor details of construction may be resorted towithout departing from the spirit or sacrificing any of the advantagesof the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In apparatus of the character described, the combination with arotatable driving member, of a rotatable driven member, one of saidmembers having inclined shoes, the other having a corresponding inclinedannular friction-surface disposed concentrically tofthe axis of rotationof the members and against which the shoes frictionally engage,

means for effecting a relative movement of the members to. cause theengagement of the shoes and inclined surface and form a frictionconnection between the members, and means for effecting the separationof said members.

2. In a paratus of the character described, the com ination with arotatable driving member including a shaft having radiating arms andshoes carried by the same, of a rotatable driven member loosely ournaledon the shaft and including a drum having an annular shoe-engagedsurface, a spring interposed between the members for normally holdingthe same separated, and means for efi'ecting the relative movement ofthe members to cause the engagement of the shoes and annular surface ofthe drum.

3. In apparatus of the character described, the combination with asupport, of an upright shaft journaled thereon, a sweep secured to theshaft, a spider secured to the shaft and including radiating arms havingshoes at their outer ends, a drum loosely journaled on the shaft andslidable thereon, said drum having an annular wall movable into and outof engagement with the shoes, means for sliding the drum upon the shaftto cause the engagement of the annular wall with the shoes, and meansfor urging the drum out of such engagement.

4. In apparatus of the character described, the combination with abase-frame, of a yoke mounted thereon, an upright shaft journaled in theframe and yoke, a sweep fixed to the upper end of the shaft, a spidersecured to the shaft beneath the yoke and having radiating arms providedwith shoes, a drum comprising a hub rotatably and slidably mounted onthe shaft beneath the spider, radiating arms carried by the drum, anannular wall .carried by the outer ends of the arms and having an innersurface arranged to be engaged by the shoes, a spring interposed betweenthe spider and frame for holding the latter in a lower position, andmeans engaging the hub of the drum for elevating said 1 drum and causingthe engagement of the surface with the shoes.

5. In apparatus of the character described,

ment with the other member upon the rela-. tive movement of saidmembers, said shoe being adjustable upon the member carrying it, andmeans for holding the shoe iri adjusted position.

6. In apparatus of the character described, the combination withrelatively rotatable members movable toward and from each other, of ashoe carried by one of the members and movable into and out ofengagement with the other member upon the relative movement of saidmembers, said shoe being adjustable upon the member carrying it, andmeans for adjusting the shoe toward and from the aXis of rotation of themember and holding said shoe in different adjusted positions.

7. In apparatus of the character described, the combination withrelatively rotatable members, one of said members including a shoehaving a head, the other member having a frictional surface, ashoe-block slidably mounted on the head and arranged to con tact withthe frictional surface, an adjusting- IIO screw engaging the head andblock for moving said block, and a clamping-screw engaging the head andblock to hold the block in adjusted position.

8. In apparatus of the character described, the combination withrelatively rotatable members, one of said members having an annularfriction-surface and teeth disposed adjacent to and at one side of thesurface, the other having a shoe provided with a frictionsurface thatcooperates with the surface of the first-mentioned member and havingteeth at one side of its friction-surface that in like manner cooperatewith the teeth thereof, of means for effecting the movement of themembers to engage the cooperating surfaces and teeth.

9. In apparatus of the character described, the combination With arotatable driving member having radiating arms provided with shoes, saidshoes each having a frictional engaging surface on one side and teeth onanother side, of a drum having a frictionsurface and teeth at one sideof the surface and in angular relation thereto the surfaces and teeth ofthe shoes respectively cooperating with those of the drum, and means formoving the drum to effect the engagement of the cooperating surfaces andteeth.

10. In apparatus of the character described, the combination with abase-frame,

of a yoke supported thereby and above the same, an upright shaftjournaled in the base frame and yoke, a sweep fixed to the upper end ofthe shaft, a spider secured to the shaft beneath the yoke and havingradiating arms, shoes secured to the outer ends of the arms and havingouter curved friction-surfaces and teeth on their under sides, a drumcomprising a hub loosely and slidably mounted on the shaft, radiatingarms carried by the hub, an annular wall mounted on the outer ends ofthe arms and having an upright frictional surface with which the outerfaces of the shoes cooperate, said drum being furthermore provided withan inwardly-extending flange having teeth with which the teethof theshoes cooperate, a spring interposed between the spider and hub forseparating the same, a collar mounted on the shaft beneath the drum-hub,and a lever cooperating with the collar for moving the same upon theshaft to carry the drum into cooperation with the shoes.

' In testimony that I claim the foregoing as my own I have heretoaffixed my signature in the presence of two witnesses.

WILSON W. MILLER.

